@synthesize resizableImageView;
@synthesize resizeButton;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[resizeButton addTarget:self action:@selector(startDraggableCorner) forControlEvents:UIControlEventTouchDown];
[resizeButton addTarget:self action:@selector(stopDraggableCorner) forControlEvents:UIControlEventTouchUpInside];
}
-(void)startDraggableCorner
{
gestureRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(wasDragged:)];
[[self view] addGestureRecognizer:gestureRecognizer];
}
-(void)wasDragged:(UIPanGestureRecognizer*)gesture
{
CGRect imageFrame = [resizableImageView frame];
imageFrame.size.height = [[gesture valueForKey:@"_lastScreenLocation"] CGPointValue].y - imageFrame.origin.y;
imageFrame.size.width = [[gesture valueForKey:@"_lastScreenLocation"] CGPointValue].x - imageFrame.origin.x;
[resizableImageView setFrame: imageFrame];
CGRect buttonFrame = [resizeButton frame];
buttonFrame.origin.x = [[gesture valueForKey:@"_lastScreenLocation"] CGPointValue].x;
buttonFrame.origin.y = [[gesture valueForKey:@"_lastScreenLocation"] CGPointValue].y;
[resizeButton setFrame:buttonFrame];
}
-(void)stopDraggableCorner
{
[[self view] removeGestureRecognizer:gestureRecognizer];
}
これは、サイズ変更可能な動作で(ほぼ)成功します。画像を回転させます。おそらく、が[[gesture valueForKey:@"_lastScreenLocation"] CGPointValue].y
特定の量を下回っているかどうかを確認してから、画像を回転させるメソッドを呼び出すことができます